Modeling Droplets on Superhydrophobic Surfaces: Equilibrium States and Transitions
- 17 February 2005
- journal article
- Published by American Chemical Society (ACS) in Langmuir
- Vol. 21 (6), 2624-2629
- https://doi.org/10.1021/la047348i
Abstract
We present a lattice Boltzmann solution of the equations of motion describing the spreading of droplets on topologically patterned substrates. We apply it to model superhydrophobic behavior on surfaces covered by an array of micrometer-scale posts. We find that the patterning results in a substantial increase in contact angle, from 110° to 156°. The dynamics of the transition from drops suspended on top of the posts to drops collapsed in the grooves is described.Keywords
This publication has 13 references indexed in Scilit:
- Wetting transitions on rough surfacesEurophysics Letters, 2004
- Transition between Superhydrophobic States on Rough SurfacesLangmuir, 2004
- Lattice Boltzmann simulations of contact line motion. I. Liquid-gas systemsPhysical Review E, 2004
- Jetting Micron-Scale Droplets onto Chemically Heterogeneous SurfacesLangmuir, 2003
- Superhydrophobic statesNature Materials, 2003
- Multiple Equilibrium Droplet Shapes and Design Criterion for Rough Hydrophobic SurfacesLangmuir, 2003
- Ultrahydrophobic Surfaces. Effects of Topography Length Scales on WettabilityLangmuir, 2000
- Contact-line dynamics of a diffuse fluid interfaceJournal of Fluid Mechanics, 2000
- DIFFUSE-INTERFACE METHODS IN FLUID MECHANICSAnnual Review of Fluid Mechanics, 1998
- Lattice Boltzmann simulations of liquid-gas and binary fluid systemsPhysical Review E, 1996